nasa says the evidence shows humans are contributing to global warming. still, the realities in washington test the bounds of how we as a nation respond. in his state of the union address, the president told members of congress that if they don't act, he will. >> eye will direct my cabinet to come up with actions we can take to reduce pollution, prepare communities for climate change, and speed the transition to more sustainable sources of energy. >> last year president obama rejected a permit to build the keystone pipeline. but democrats are torn between a base of supporters who strongly oppose the project and the potential business boom by adding thousands of new jobs into the work force. that permit now rests in the hands of the state department, and secretary john kerry, who in august suggested climate change is as dangerous as iran, nuclear weapons, and war. now, on february 8, kerry met with canada's foreign minister, and he promised a fair, transparent and prompt decision on that. i don't know. it's a tough one, actually. >> andrew, what do you thi